Since its inception nearly three decades ago, the Pokémon franchise has grown into a global phenomenon. Originating from the release of Pokémon Red and Green in Japan in 1996, this beloved series has expanded into various forms of media, surpassing even iconic franchises like Mickey Mouse and Star Wars in terms of revenue. Over the years, numerous mainline titles have been released, each contributing uniquely to the brand's success. This article delves into a ranking of these core games based on critical reception, focusing specifically on the original releases within each generation while excluding remakes and extended versions.

Among the latest additions to the franchise are Pokémon Scarlet and Violet, which introduced innovative concepts but struggled with execution. Despite their ambitious ideas, technical issues marred the experience, leading to a mixed reception from players. Moving backward in time, Pokémon Sword and Shield, despite initial shortcomings, saw significant improvements through downloadable content, enhancing the overall gameplay. Meanwhile, Generation 3's Ruby and Sapphire brought about a refreshing narrative set in a new region, setting a high standard for subsequent entries.

Pokémon Legends: Arceus marked a bold departure from traditional gameplay by experimenting with an open-world format in the Sinnoh region. Although not all changes were well-received, the game quickly became a fan favorite. Diamond and Pearl introduced the physical/special split in battles, alongside enchanting world design and memorable music. Black and White further elevated storytelling, introducing complex characters and plot twists that resonated deeply with fans. The transition to fully 3D graphics in X and Y brought visual advancements and the Mega Evolution mechanic, although it played it safe in other aspects.

Sun and Moon, initially met with criticism, have since gained appreciation for their unique storyline and captivating world-building. Finally, returning to the roots of the franchise, Pokémon Red and Blue laid the foundation for what would become one of the most successful entertainment properties ever. Their simplicity and solid gameplay mechanics paved the way for future innovations. Gold and Silver built upon this legacy, offering more depth and content, solidifying their place as the pinnacle of the series.

In conclusion, the journey through the mainline Pokémon games reveals a rich history of innovation and evolution. From the pioneering efforts of the first titles to the experimental nature of recent releases, each entry contributes to the enduring appeal of the franchise. While some games may have stumbled along the way, the collective impact of these titles showcases the remarkable growth and adaptability of Pokémon over nearly three decades.